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From: Shailabh Nagar <nagar@watson.ibm.com>
To: "Marc E. Fiuczynski" <mef@CS.Princeton.EDU>
Cc: Peter Williams <pwil3058@bigpond.net.au>,
	lkml <linux-kernel@vger.kernel.org>,
	ckrm-tech <ckrm-tech@lists.sourceforge.net>
Subject: Re: [ckrm-tech] RE: [ANNOUNCE][RFC] plugsched-2.0 patches ...
Date: Fri, 21 Jan 2005 10:16:13 -0500	[thread overview]
Message-ID: <41F11CBD.1030105@watson.ibm.com> (raw)
In-Reply-To: <NIBBJLJFDHPDIBEEKKLPMEODDHAA.mef@cs.princeton.edu>

Marc E. Fiuczynski wrote:
> Hi Peter,
> 
> 
>>I'm hoping that the CKRM folks will send me a patch to add their
>>scheduler to plugsched :-)
> 
> 
> They are planning to release a patch against 2.6.10.  But their patch wont
> stand alone against 2.6.10 and so it might be difficult for you to integrate
> their code into a scheduler for plugsched.

Thats true. The current CKRM CPU scheduler is not a standalone 
component...if it were made one, it would need a non-CKRM interface to 
define classes, set their shares etc.

However, we have not investigated the possibility of making our CPU 
scheduler a pluggable one that could be loaded into a kernel equipped 
with the plugsched patches AND the CKRM framework. This should be 
possible but not a high priority until there is more  consensus for 
having CPU schedulers pluggable at all  (we have more basic stuff to fix 
in our scheduler such as load balancing).

Of course, we're more than happpy to work with someone willing to chip 
in and make our scheduler pluggable.

-- Shailabh

> Also, the CKRM scheduler only modifies Ingo's O(1) scheduler.  It certainly
> would be interesting to have CKRM variants of the other schedulers.  This
> points to a whole new level of 'plugsched' in that general O(1) schedulers
> need to support fair share plugins.
> 
> Marc
> 
> 
> 
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      reply	other threads:[~2005-01-21 15:16 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-20  1:23 [ANNOUNCE][RFC] plugsched-2.0 patches Peter Williams
2005-01-20  1:58 ` Kasper Sandberg
2005-01-20 16:14 ` Marc E. Fiuczynski
2005-01-20 17:51   ` Valdis.Kletnieks
2005-01-21 14:11     ` Jens Axboe
2005-01-21 16:29       ` Marc E. Fiuczynski
2005-01-21 16:43         ` Con Kolivas
2005-01-21 21:20           ` Peter Williams
2005-01-21  2:38   ` Peter Williams
2005-01-21  2:50     ` Marc E. Fiuczynski
2005-01-21 15:16       ` Shailabh Nagar [this message]

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